net: phy: phylink: Don't release NULL GPIO

If CONFIG_GPIOLIB is disabled, gpiod_put() becomes a stub that produces a
warning, this helped identify that we could be attempting to release a NULL
pl->link_gpio GPIO descriptor, so guard against that.

Fixes: daab3349ad1a ("net: phy: phylink: Release link GPIO")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index 581ce93ecaf9a3e2b95daecd8e295e2af5fd602a..af4dc4425be28101dd3e8e53b3327c3ef41f725f 100644 (file)
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -624,7 +624,7 @@ void phylink_destroy(struct phylink *pl)
 {
        if (pl->sfp_bus)
                sfp_unregister_upstream(pl->sfp_bus);
-       if (!IS_ERR(pl->link_gpio))
+       if (!IS_ERR_OR_NULL(pl->link_gpio))
                gpiod_put(pl->link_gpio);
 
        cancel_work_sync(&pl->resolve);